oj.uz

Submission #166875

# Submission time Handle Problem Language Result Execution time Memory
166875 2019-12-04T13:04:56 Z Hideo Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 306 ms 27652 KB 
// Need to git gud and reach 1900+
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>
using namespace std;

#define all(s) s.begin(), s.end()
#define ok puts("ok")
#define ll long long
#define pb push_back
#define mk make_pair
#define fr first
#define sc second
#define vi vector < int >
#define pi pair < int, int >
#define prev prev123
#define next next123
#define pow pow123
#define left left123
#define right right123

const int N = 30007;
const int M = 207;
const int INF = 1e9 + 7;

int a[N], b[N];
int d[N][M];
int m, n, s, f;

vector < int > lst[N];

main(){ // If you don't know what to do, check the text box at the bottom
    cin >> m >> n;
    for (int i = 1; i <= n; i++){
        scanf("%d%d", &a[i], &b[i]);
        lst[a[i] + 1].pb(b[i]);
    }
    s = a[1] + 1, f = a[2] + 1;
    priority_queue < pair < int, pi > > pq;
    pq.push(mk(0, mk(s, 0)));
    memset(d, 0x3f3f3f3f, sizeof(d));
    d[s][0] = 0;
    while (!pq.empty()){
        int w = -pq.top().fr, v = pq.top().sc.fr, pw = pq.top().sc.sc;
        pq.pop();
        if (d[v][pw] < w)
            continue;
        if (pw == 0){
            for (int to : lst[v]){
                if (to > 50){
                    int pos = v, c = 0;
                    while (pos + to <= m){
                        pos += to; c++;
                        if (d[pos][0] > d[v][0] + c){
                            d[pos][0] = d[v][0] + c;
                            pq.push(mk(-d[pos][0], mk(pos, 0)));
                        }
                    }
                    pos = v, c = 0;
                    while (pos - to > 0){
                        pos -= to; c++;
                        if (d[pos][0] > d[v][0] + c){
                            d[pos][0] = d[v][0] + c;
                            pq.push(mk(-d[pos][0], mk(pos, 0)));
                        }
                    }
                }
                else {
                    if (d[v][to] > d[v][0]){
                        d[v][to] = d[v][0];
                        pq.push(mk(-d[v][to], mk(v, to)));
                    }
                }
            }
        }
        else {
            if (v + pw <= m && d[v + pw][pw] > d[v][pw] + 1){
                d[v + pw][pw] = d[v][pw] + 1;
                pq.push(mk(-d[v + pw][pw], mk(v + pw, pw)));
            }
            if (v + pw <= m && d[v + pw][0] > d[v][pw] + 1){
                d[v + pw][0] = d[v][pw] + 1;
                pq.push(mk(-d[v + pw][0], mk(v + pw, 0)));
            }
            if (v - pw > 0 && d[v - pw][pw] > d[v][pw] + 1){
                d[v - pw][pw] = d[v][pw] + 1;
                pq.push(mk(-d[v - pw][pw], mk(v - pw, pw)));
            }
            if (v - pw > 0 && d[v - pw][0] > d[v][pw] + 1){
                d[v - pw][0] = d[v][pw] + 1;
                pq.push(mk(-d[v - pw][0], mk(v - pw, 0)));
            }
        }
    }
    if (d[f][0] != d[0][0])
        printf("%d", d[f][0]);
    else
        puts("-1");
}

/*
    Totally not inspired by BenQ's template
    Things you should do:
    1. Look for stupid typos in code e.g 1 instead of -1 etc
    2. Check if there is no infinite loops
    3. "Measure twice, cut once"
    4. Stay focused
*/

Compilation message

skyscraper.cpp:33:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){ // If you don't know what to do, check the text box at the bottom
      ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &a[i], &b[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25336 KB Output is correct
2 Correct 25 ms 25336 KB Output is correct
3 Correct 26 ms 25336 KB Output is correct
4 Correct 26 ms 25340 KB Output is correct
5 Correct 25 ms 25336 KB Output is correct
6 Correct 26 ms 25336 KB Output is correct
7 Correct 25 ms 25336 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25336 KB Output is correct
2 Correct 25 ms 25336 KB Output is correct
3 Correct 25 ms 25336 KB Output is correct
4 Correct 25 ms 25464 KB Output is correct
5 Correct 25 ms 25276 KB Output is correct
6 Correct 26 ms 25336 KB Output is correct
7 Correct 25 ms 25336 KB Output is correct
8 Correct 25 ms 25336 KB Output is correct
9 Correct 25 ms 25336 KB Output is correct
10 Correct 25 ms 25336 KB Output is correct
11 Correct 26 ms 25324 KB Output is correct
12 Correct 25 ms 25336 KB Output is correct
13 Correct 25 ms 25336 KB Output is correct
14 Correct 26 ms 25464 KB Output is correct
15 Correct 26 ms 25464 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25336 KB Output is correct
2 Correct 25 ms 25336 KB Output is correct
3 Correct 25 ms 25336 KB Output is correct
4 Correct 26 ms 25360 KB Output is correct
5 Correct 25 ms 25464 KB Output is correct
6 Correct 25 ms 25336 KB Output is correct
7 Correct 25 ms 25336 KB Output is correct
8 Correct 25 ms 25336 KB Output is correct
9 Correct 25 ms 25336 KB Output is correct
10 Correct 26 ms 25336 KB Output is correct
11 Correct 27 ms 25464 KB Output is correct
12 Correct 25 ms 25308 KB Output is correct
13 Correct 25 ms 25336 KB Output is correct
14 Correct 26 ms 25464 KB Output is correct
15 Correct 27 ms 25464 KB Output is correct
16 Correct 25 ms 25336 KB Output is correct
17 Correct 27 ms 25464 KB Output is correct
18 Correct 25 ms 25312 KB Output is correct
19 Correct 25 ms 25336 KB Output is correct
20 Correct 27 ms 25464 KB Output is correct
21 Correct 26 ms 25336 KB Output is correct
22 Correct 25 ms 25336 KB Output is correct
23 Correct 26 ms 25336 KB Output is correct
24 Correct 27 ms 25464 KB Output is correct
25 Correct 26 ms 25464 KB Output is correct
26 Correct 28 ms 25464 KB Output is correct
27 Correct 26 ms 25336 KB Output is correct
28 Correct 28 ms 25364 KB Output is correct
29 Correct 33 ms 25336 KB Output is correct
30 Correct 27 ms 25336 KB Output is correct
31 Correct 30 ms 25336 KB Output is correct
32 Correct 29 ms 25464 KB Output is correct
33 Correct 39 ms 25592 KB Output is correct
34 Correct 39 ms 25428 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25336 KB Output is correct
2 Correct 25 ms 25364 KB Output is correct
3 Correct 25 ms 25340 KB Output is correct
4 Correct 25 ms 25336 KB Output is correct
5 Correct 24 ms 25336 KB Output is correct
6 Correct 26 ms 25464 KB Output is correct
7 Correct 25 ms 25336 KB Output is correct
8 Correct 25 ms 25464 KB Output is correct
9 Correct 25 ms 25336 KB Output is correct
10 Correct 25 ms 25336 KB Output is correct
11 Correct 26 ms 25336 KB Output is correct
12 Correct 25 ms 25336 KB Output is correct
13 Correct 25 ms 25336 KB Output is correct
14 Correct 26 ms 25464 KB Output is correct
15 Correct 26 ms 25464 KB Output is correct
16 Correct 26 ms 25308 KB Output is correct
17 Correct 27 ms 25464 KB Output is correct
18 Correct 26 ms 25440 KB Output is correct
19 Correct 26 ms 25336 KB Output is correct
20 Correct 26 ms 25464 KB Output is correct
21 Correct 26 ms 25336 KB Output is correct
22 Correct 25 ms 25308 KB Output is correct
23 Correct 26 ms 25336 KB Output is correct
24 Correct 27 ms 25464 KB Output is correct
25 Correct 26 ms 25464 KB Output is correct
26 Correct 26 ms 25336 KB Output is correct
27 Correct 25 ms 25464 KB Output is correct
28 Correct 27 ms 25464 KB Output is correct
29 Correct 33 ms 25336 KB Output is correct
30 Correct 28 ms 25336 KB Output is correct
31 Correct 30 ms 25340 KB Output is correct
32 Correct 29 ms 25336 KB Output is correct
33 Correct 38 ms 25464 KB Output is correct
34 Correct 38 ms 25464 KB Output is correct
35 Correct 39 ms 26104 KB Output is correct
36 Correct 28 ms 25464 KB Output is correct
37 Correct 40 ms 25908 KB Output is correct
38 Correct 43 ms 26104 KB Output is correct
39 Correct 43 ms 26204 KB Output is correct
40 Correct 44 ms 26104 KB Output is correct
41 Correct 43 ms 26232 KB Output is correct
42 Correct 32 ms 26104 KB Output is correct
43 Correct 31 ms 25976 KB Output is correct
44 Correct 31 ms 25848 KB Output is correct
45 Correct 44 ms 25844 KB Output is correct
46 Correct 45 ms 26104 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25336 KB Output is correct
2 Correct 16 ms 25316 KB Output is correct
3 Correct 24 ms 25336 KB Output is correct
4 Correct 25 ms 25336 KB Output is correct
5 Correct 24 ms 25308 KB Output is correct
6 Correct 25 ms 25464 KB Output is correct
7 Correct 24 ms 25340 KB Output is correct
8 Correct 24 ms 25312 KB Output is correct
9 Correct 25 ms 25336 KB Output is correct
10 Correct 26 ms 25336 KB Output is correct
11 Correct 25 ms 25464 KB Output is correct
12 Correct 25 ms 25336 KB Output is correct
13 Correct 25 ms 25336 KB Output is correct
14 Correct 26 ms 25464 KB Output is correct
15 Correct 56 ms 25464 KB Output is correct
16 Correct 26 ms 25336 KB Output is correct
17 Correct 26 ms 25464 KB Output is correct
18 Correct 25 ms 25464 KB Output is correct
19 Correct 24 ms 25336 KB Output is correct
20 Correct 26 ms 25464 KB Output is correct
21 Correct 25 ms 25336 KB Output is correct
22 Correct 25 ms 25336 KB Output is correct
23 Correct 27 ms 25464 KB Output is correct
24 Correct 27 ms 25436 KB Output is correct
25 Correct 27 ms 25464 KB Output is correct
26 Correct 27 ms 25464 KB Output is correct
27 Correct 26 ms 25408 KB Output is correct
28 Correct 26 ms 25592 KB Output is correct
29 Correct 33 ms 25340 KB Output is correct
30 Correct 28 ms 25336 KB Output is correct
31 Correct 30 ms 25340 KB Output is correct
32 Correct 28 ms 25336 KB Output is correct
33 Correct 39 ms 25464 KB Output is correct
34 Correct 37 ms 25464 KB Output is correct
35 Correct 38 ms 25976 KB Output is correct
36 Correct 28 ms 25464 KB Output is correct
37 Correct 40 ms 25848 KB Output is correct
38 Correct 43 ms 26104 KB Output is correct
39 Correct 43 ms 26104 KB Output is correct
40 Correct 43 ms 26232 KB Output is correct
41 Correct 43 ms 26104 KB Output is correct
42 Correct 32 ms 26104 KB Output is correct
43 Correct 31 ms 26104 KB Output is correct
44 Correct 32 ms 25980 KB Output is correct
45 Correct 45 ms 26104 KB Output is correct
46 Correct 46 ms 25976 KB Output is correct
47 Correct 97 ms 26424 KB Output is correct
48 Correct 33 ms 26232 KB Output is correct
49 Correct 33 ms 25980 KB Output is correct
50 Correct 31 ms 26008 KB Output is correct
51 Correct 78 ms 27000 KB Output is correct
52 Correct 80 ms 26808 KB Output is correct
53 Correct 46 ms 26460 KB Output is correct
54 Correct 27 ms 25336 KB Output is correct
55 Correct 28 ms 25340 KB Output is correct
56 Correct 40 ms 26744 KB Output is correct
57 Correct 132 ms 25976 KB Output is correct
58 Correct 37 ms 25976 KB Output is correct
59 Correct 40 ms 26104 KB Output is correct
60 Correct 39 ms 25848 KB Output is correct
61 Correct 40 ms 26104 KB Output is correct
62 Correct 58 ms 26872 KB Output is correct
63 Correct 68 ms 26740 KB Output is correct
64 Correct 71 ms 26868 KB Output is correct
65 Correct 83 ms 27652 KB Output is correct
66 Correct 306 ms 27576 KB Output is correct
67 Correct 303 ms 27632 KB Output is correct